Semantic processing in bilingual aphasia: evidence of language dependency

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• dc.contributor.author Calabria, Marco
• dc.contributor.author Grunden, Nicholas
• dc.contributor.author Serra, Mariona
• dc.contributor.author García Sánchez, Carmen
• dc.contributor.author Costa, Albert, 1970-
• dc.date.accessioned 2023-01-17T09:09:55Z
• dc.date.available 2023-01-17T09:09:55Z
• dc.date.issued 2019
• dc.description.abstract Individuals with aphasia frequently show lexical retrieval deficits due to increased interference of semantically related competitors, a phenomenon that can be observed in tasks such as naming pictures grouped by semantic category. These deficits are explained in terms of impaired semantic control, a set of abilities that are to some extent dependent upon executive control (EC). However, the extent to which semantic control abilities can be affected in a second and non-dominant language has not been extensively explored. Additionally, findings in healthy individuals are inconclusive regarding the degree to which semantic processing is shared between languages. In this study, we explored the effect of brain damage on semantic processing by comparing the performance of bilingual individuals with aphasia on tasks involving semantic control during word production and comprehension. Furthermore, we explored whether semantic deficits are related to domain-general EC deficits. First, we investigated the naming performance of Catalan–Spanish bilinguals with fluent aphasia and age-matched healthy controls on a semantically blocked cyclic naming task in each of their two languages (Catalan and Spanish). This task measured semantic interference in terms of the difference in naming latencies between pictures grouped by the same semantic category or different categories. Second, we explored whether lexical deficits extend to comprehension by testing participants in a word-picture matching task during a mixed language condition. Third, we used a conflict monitoring task to explore the presence of EC deficits in patients with aphasia. We found two main results. First, in both language tasks, bilingual patients’ performances were more affected than those of healthy controls when they performed the task in their non-dominant language. Second, there was a significant correlation between the speed of processing on the EC task and the magnitude of the semantic interference effect exclusively in the non-dominant language. Taken together, these results suggest that lexical retrieval may be selectively impaired in bilinguals within those conditions where semantic competition is higher, i.e.,- in their non-dominant language; this could possibly be explained by an excessive amount of inhibition placed upon this language. Moreover, lexico-semantic impairments seem to be at least somewhat related to conflict monitoring deficits, suggesting a certain degree of overlap between EC and semantic control.
• dc.description.sponsorship MC was supported by the postdoctoral Ramón y Cajal fellowship (RYC-2013-14013) and Agencia Estatal de Investigación (AEI, National Research Agency) and Fondo Europeo de Desarrollo Regional (FEDER, European Regional Development Fund) under project PSI2017-87784-R. This work was also supported by grants from the Catalan government (2017 SGR 268 and 2009 SGR 1521) and the European Union’s Seventh Framework Program for Research (No. 613465).
• dc.format.mimetype application/pdf
• dc.identifier.citation Calabria M, Grunden N, Serra M, García-Sánchez C, Costa A. Semantic processing in bilingual aphasia: evidence of language dependency. Front Hum Neurosci. 2019 Jun 14;13:205. DOI: 10.3389/fnhum.2019.00205
• dc.identifier.doi http://dx.doi.org/10.3389/fnhum.2019.00205
• dc.identifier.issn 1662-5161
• dc.identifier.uri http://hdl.handle.net/10230/55303
• dc.language.iso eng
• dc.publisher Frontiers
• dc.relation.ispartof Frontiers in Human Neuroscience. 2019 Jun 14;13:205
• dc.relation.projectID info:eu-repo/grantAgreement/EC/FP7/613465
• dc.relation.projectID info:eu-repo/grantAgreement/ES/2PE/PSI2017-87784-R
• dc.rights © 2019 Calabria, Grunden, Serra, García-Sánchez and Costa. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
• dc.rights.accessRights info:eu-repo/semantics/openAccess
• dc.rights.uri http://creativecommons.org/licenses/by/4.0/
• dc.subject.keyword Bilingual aphasia
• dc.subject.keyword Semantic control
• dc.subject.keyword Cycling naming
• dc.subject.keyword Language dependency
• dc.subject.keyword Executive control
• dc.subject.keyword Language control
• dc.title Semantic processing in bilingual aphasia: evidence of language dependency
• dc.type info:eu-repo/semantics/article
• dc.type.version info:eu-repo/semantics/publishedVersion